Fill in the gap with the most appropriate word from the four choices provided.
1. Both sides wrote carefully _______ arguments on the issue.
spoken
illustrated
constructed
published
2. The solution was so ______ that there was little debate.
hidden
lost
apparent
complex
3. The chairperson is ______ managing the committee.
carrying on
capable of
critical of
happy to
4. Unfortunately, I can't go. I have a prior ______.
headache
refusal
commitment
illness
5. The teacher insisted that she was only considering the students' ______ by giving extra assignments.
disadvantage
harm
anger
welfare
6. The restaurant does not ______ its menu because its customers do not like change.
vary
retain
keep
publish
7. Give me one ______ reason why you can't go on the trip.
false
valid
unlikely
unreasonable
8. Is there a book that discusses the ______ causes of World War I?
underlying
invalid
visible
popular
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